Katy Perry on 'The Simpsons'

Katy Perry on 'The Simpsons'

Fox

Singer Katy Perry poses with characters from the FOX network series "The Simpsons" in this undated publicity photograph released by Fox on Sept. 27, 2010. According to Entertainment Weekly, Perry will guest star in a Christmas-themed Simpsons episode.

Singer Katy Perry poses with characters from the FOX network series "The Simpsons" in this undated publicity photograph released by Fox on Sept. 27, 2010. According to Entertainment Weekly, Perry will guest star in a Christmas-themed Simpsons episode. (Fox)

Singer Katy Perry poses with characters from the FOX network series "The Simpsons" in this undated publicity photograph released by Fox on Sept. 27, 2010. According to Entertainment Weekly, Perry will guest star in a Christmas-themed Simpsons episode.